Drive - Konica Minolta bizhub 169 Service Manual

8. PH (Writing section)
8.2

Drive

• When a laser beam strikes the Polygon Mirror, light reflected off the Polygon Mirror is
directed at the PC Drum by way of the lens and return mirror.
• The Polygon Mirror has seven faces, being turned at high speeds by the Polygon Motor.
• The SOS Mirror and SOS Sensor keep constant the timing, at which emission of a laser
beam is started for each main scanning line.
LD Board
22
SOS Sensor
Theory of Operation Ver. 1.0 Apr. 2007
Polygon
Motor
fθ Lens
SOS Mirror
PC Drum
A08EC526AA